ÏM = standard error of the mean Ï = the standard deviation of the original distribution N = the sample size âN = Root of the sample size. The standard error of the mean, also called the standard deviation of the mean, is a method used to estimate the standard deviation of a sampling distribution.To understand this, first we need to understand why a sampling distribution is required. Don't miss these related articles:he standard error of the mean, also called the standard deviation of the mean, is a method used to estimate the standard deviation of a sampling distribution. To understand this, first we need to understand why a sampling distribution is required.
Acidosis and alkalosis describe the abnormal conditions that result from an imbalance in the pH of the blood caused by an excess of acid or alkali (base).
Loss of gastric acid (vomiting, NG drainage) and diuretic use account for 90% of clinical cases of metabolic alkalosis. Gastric alkalosis is most marked with vomiting due to pyloric stenosis or obstruction because the vomitus is acidic gastric juice only.Vomiting in other conditions may involve a mixture of acid gastric loss and alkaline duodenal contents and the acid-base situation that results is more variable.istamine H2-blockers also decrease gastric H + losses despite continued vomiting or nasogastric drainage and alkalosis will not occur if the fluid lost is not particularly acidic-indeed loss of alkaline small intestinal contents can even result in an acidosis if gastric acid secretion is suppressed.